Life does not stop with the individual body. There are still several levels of biological organization lying beyond the organism (but including it). POPULATIONS Of course, male and female organisms of the same species or ‘‘kind’’ can breed with one another. The result of such breeding is a population. A population consists of a group …
A Pyramid of Life (…flipped!)
We use this model to understand the scale of what makes up life and, more importantly, where life begins -- at the cell.
Structure and Function of a Cell (As a City)
We compared the cell (which is where life begins) to a city, in order to better understand the function of it parts, or organelles. Nucleus: Government | Nucleolus: Governors | Chromatin: The Law Cell Membrane (if plant, Cell Wall): Border Security/Customs and Immigration Cytoplasm: Roads Ribosomes : Lumbar Yard Mitochondria: Power Plant Endoplasmic Reticulum: Delivery …
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Our Place in the Universe, and the Fragility of Life
https://www.youtube.com/watch?v=44cv416bKP4 For Environmental Science, we use this video to get an idea of the special the Earth is at the scale of the entire Universe. There are billions of galaxies, and within each galaxy billions of stars, and around hundreds of planets, but it is only around our Sun that we find Earth, our home, …
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Characteristics of Living Things
Since physiology (body function) only occurs within living organisms, it is very important for us to know the basic characteristics of living things: 1. Living things have a high degree of Biological Order (body pattern or organization). In general, living organisms are much more organized than dead ones. And we have already said that living …
Natural History — Searching for Order
Although ancient peoples around the world have been informally learning about Biological Order (and its counterpart, Biological Disorder) for thou- sands of years, a systematic approach to the search for Order has only begun relatively recently. Aristotle, who lived during 384–322 B.C. in Greece, was one of the first natural philosophers (Figure 1.5). Aristotle may …
Tree of Life
Biology as the scientific study of living things is a relatively recent develop- ent. The term has been in use since the early 1800s to describe the study of living organisms. Basically, an organism is a living thing that is highly organized. By this we mean that an organism has a high degree of Biological Order, a very organized pattern.
Mr. Aly's Science Classroom 